This interactive bubble chart visualizes correlations between mean temperature, humidity, and wind speed across 50 U.S. cities. Each circle’s x-position represents temperature, y-position represents humidity, and radius encodes wind speed, while color distinguishes cities. Hovering reveals a city name tooltip. Built with D3.js v7, the SVG renders axes, a size legend for wind speed, and uses d3.scaleOrdinal for city coloring. Data is loaded from a CSV file, with animated opacity and stroke changes on mouseover.